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Politicians from different parties collaborate on climate and energy challenges; with Kay Bailey Hutchison and Joe Manchin.

From New York to Kolkata, dicovering the surprising and beneficial ways urban wildlife transforms cities into thriving, shared ecosystems.

Archaeological investigations into the origins of democracy in Greece 2,500 years ago; mass graves and ancient ruins where tyrants were murdered shine light on the birth of a revolutionary form of government.

Exploring the unique evolutionary journey of woodpeckers and the role they play in every ecosystem, except Antarctica and Australia.

Women speak out about violence in relationships and demand stricter laws; lessons learned from storm surges in Italy; public refrigerators; creative cafés against digital stress.

A panel of journalists provides reporting and analysis of the major stories emanating from the United States capital.

Science, health, technology and environment experts and professionals address issues such as artificial intelligence, medicine and climate science.

Margaret Hoover leads interviews and debates.

Incorporating body patting and other exercises to strengthen balance and stimulate the body and mind.

Marine botanist Sylvia Earle and Fred Rogers snorkel off the Florida Keys.

Everett faces his fear of water by taking a swimming lesson; Lyla doesn't want Miss Emmaline to move.

Lotta is determined to show Skyler that she is more than just "headphone girl"; the new kid in school causes a hullabaloo on the playground.

Daniel uses a different bathroom at the train station and Juan uses the bathroom at the Music Shop; O uses the bathroom at Jodi's house.

Phoebe and Jay use Miss Jean's field guide to identify their new butterfly friend; Phoebe gets courage to perform at the talent show.

Rudy is afraid of getting a shot at the doctor's office, so Nina and Abby play pretend to show what the visit will be like so he can feel less scared.

The Squad uses math and engineering skills to fix scooters after they mysteriously break; Jackie tests her new fixing skills on a broken family heirloom.

Martin and Chris spot a hermit crab on the beach.

A foraging couple in Story City, an autism awareness advocate, and the Urban Bike Food Ministry.

Margaret Hoover leads interviews and debates.

Experts analyze prominent international affairs topics and America's role in a shifting world.

Social, political and economic trends of American agriculture.

Italian artist Franco Alessandrini wants to give New Orleans a gift on its 300th anniversary and commemorate St. Pope John Paul II's 1987 visit.

Exploring seven animal songs found in nature and their significance in the lives of their species, from the song of the largest lemur to the song of the humpback whale.

A team of forensic experts excavate a giant Pliosaur skull, the largest Jurassic predator ever known.

David Attenborough explores London's Natural History Museum and meets creatures from the past, brought to life by CGI, including a giant eagle and colossal snake.

Behind-the-scenes footage and candid on-location interviews with David Attenborough, and a look at his life from his boyhood days as a fossil hunter to his many years on the road.

A new cohort of junior doctors join the midwives, including Timothy, who observes the contrast between clinical medicine and compassionate care at Nonnatus House; Violet announces her plan to shadow the midwives.

Emma convinces Harriet Smith that she is too good for Robert Martin.

Edmond locates Gaston, Villefort's illegitimate child, who has grown up to be a thief; Danglars discovers Fernand's treacherous deeds in Algeria and reveals all to the press.

Mysterious financial losses lead the Post Office to fire and prosecute village Subpostmasters who are unable to prove their innocence.

Alan Bates and the Subpostmasters begin to fight for truth and justice with new allies in Parliament.

The team is confounded by a shocking murder in a hotel elevator.

Italy's classic hill towns include San Gimignano, Cortona, Orvieto and Civita di Bagnoregio.

Exploring the home museum of Luciano Pavarotti in Modena, Italy; gelato; how Parmigiano-Reggiano is aged; touring famed car brands including Ferrari and Stanguellini; sampling historic balsamic vinegar; local Lambrusco wines.

A new cohort of junior doctors join the midwives, including Timothy, who observes the contrast between clinical medicine and compassionate care at Nonnatus House; Violet announces her plan to shadow the midwives.

Emma convinces Harriet Smith that she is too good for Robert Martin.

Edmond locates Gaston, Villefort's illegitimate child, who has grown up to be a thief; Danglars discovers Fernand's treacherous deeds in Algeria and reveals all to the press.

Experts analyze prominent international affairs topics and America's role in a shifting world.

Standing and barre exercises focus on strengthening the knees, relieving joint stiffness and improving overall mobility.

The kids learn what colors make up a rainbow just in time for a Mother's Day surprise.

Lyla and her sisters find a lost bag's owner; Lyla gets jealous when Ale gets attention.

Carl and his friends clean up the Fuzzytown Park; Carl accidentally breaks the birthday present Sheldon planned to give his mom.

Miss Elaina shows off her cartwheel at the carnival, prompting Daniel to try it, too.

Phoebe plans a birthday surprise for Grandma; Phoebe and Jay must tend to the bell pepper in the garden.

Rudy feels angry when Abby asks him to share his toys, so his friends make a movie to show that sharing can be fun.

Sammy and Benito find a way to communicate; Sammy makes plans for his mom's visit.

Donkey makes Grampy a special card but she gets into a few sticky situations when she tries to deliver it to him; the pals help Harriett with her new invention for penguins.

Rosie, Jun and Grandpa Liu go to the Asian Market to buy more sweet potato buns; Rosie and Javi help Tia overcome her stage fright when she goes on a television cooking show.

The kids learn about crying as they set out on an adventure to help Miri; the kids and Mr. Bat look for Ari's ball after it goes missing in a cave.

Big Dog is too big to play Little Red on Peg's stage; baby sitters Peg and Cat must figure out how to use a giant beeper.

A family of beavers builds a dam that accidentally diverts water into Trini's garden, threatening her strawberries; Trini is determined to earn the Night Watchers Badge.

Miss Elaina shows off her cartwheel at the carnival, prompting Daniel to try it, too.

Sammy and Benito find a way to communicate; Sammy makes plans for his mom's visit.

Phoebe plans a birthday surprise for Grandma; Phoebe and Jay must tend to the bell pepper in the garden.

The kids learn what colors make up a rainbow just in time for a Mother's Day surprise.

Rukmini Devi reminds Xavier and Yadina why their annual family walk is special; Bob Ross shows Yadina that a small blunder can be a happy accident.

Alma and her friends must vote for either a new board game or art supplies; Alma and Harper open a lemonade stand.

Arthur gets chicken pox just as the circus comes to town; Arthur blames D.W. for making his dog sick.

Martin wants to check out insects, while Chris would rather investigate the spider monkey.

Tracing the trail of pilgrims, from the French border to Santiago de Compostela; running with the bulls in Pamplona; Celtic culture of Galicia.

An autographed first edition copy of Harper Lee's "To Kill a Mockingbird"; Titanic photograph and book; Rolex military watch.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

A 1960 Ansel Adams Portfolio III: Yosemite Valley; a Persian Qashqai Gabbeh rug circa 1935; 1959 JFK's boxer shorts with signed photo.

The French-American alliance changes the war and moves it to other theaters; navies battle off England and in the Caribbean, while armies advance in Indian Country and the South; the British take Charleston.

An adventure across Iowa's scenic byways, enjoying the historic sites, unique attractions and natural beauty along the way.

A conversation with Harry Smith, the Swan Ballet, and an accessible treehouse at the Iowa Arboretum.

Felix's wedding fast approaches but Sister Boniface tries to unveil the killer in the wedding party before the big day.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

A 1960 Ansel Adams Portfolio III: Yosemite Valley; a Persian Qashqai Gabbeh rug circa 1935; 1959 JFK's boxer shorts with signed photo.

The French-American alliance changes the war and moves it to other theaters; navies battle off England and in the Caribbean, while armies advance in Indian Country and the South; the British take Charleston.

An adventure across Iowa's scenic byways, enjoying the historic sites, unique attractions and natural beauty along the way.

A conversation with Harry Smith, the Swan Ballet, and an accessible treehouse at the Iowa Arboretum.

Christiane Amanpour leads discussions about world issues and interviews with global leaders.

An entry-level, standing and barre workout provides a deep stretch that relieves tension and pain in the muscles and joints while rebalancing the body.

As a hurricane approaches, the Hunter kids learn about preparation and safety, moving furniture inside and checking their emergency supplies.

Lyla and Luke create and act out variations on a fairy tale; Lyla, Louis and Stu track down a lost package.

Nico and Arugula start a hamster sitter business; Carl is afraid to tell his Mama that his new shoes hurt his feet.

Daniel greets his friends at school; Miss Elaina and Katerina play space restaurant.

Phoebe, Jay and Lupe practice their fire safety plan when the fire inspector visits; Phoebe and Jay buy juice from Mr. Aguilar.

When Oscar tries to find someone disappointed by his disappoint-o-meter, he accidentally makes them happy.

Zadie must face her fear and go to the barber for a haircut; Malik discovers smart devices have limitations.

Captain Donkey and her crew search for the Ruby Red Tater Treasure; Panda finds his favorite hoodie, but it no longer fits.

Rosie helps Iggy get ready for his checkup; Rosie wants to play in the new park -- but it is a park for dogs.

Elinor finds what she thinks is a fish in the pond, but she and her friends realize it's a tadpole turning into a frog; Elinor, Ari and Olive make up a dance.

Baby Peg tells mom she wants a stray kitty for her pet and problem-solving partner; Peg and Cat scramble to make valentines.

Molly must find her mom's plane keys so she can get home in time for Mother's Day; Trini spots a talking white bird.

Daniel greets his friends at school; Miss Elaina and Katerina play space restaurant.

Zadie must face her fear and go to the barber for a haircut; Malik discovers smart devices have limitations.

Phoebe, Jay and Lupe practice their fire safety plan when the fire inspector visits; Phoebe and Jay buy juice from Mr. Aguilar.

As a hurricane approaches, the Hunter kids learn about preparation and safety, moving furniture inside and checking their emergency supplies.

Cesar Chavez helps Xavier, Yadina and Brad find the inspiration to tackle a big mess in the playroom; Dolores Huerta teaches Xavier, Yadina and Brad that it is important to speak up when they see someone in need.

Alma helps Andre prepare for a checkers tournament; Alma and Rafia compete for World's Greatest Artist.

Arthur spices up an autobiographical story with fantastic tales; Arthur's dog, Pal, gets lost at a street fair.

The Wild Kratts set off to find and re-create spider silk.

The ancient Basque Country capital of Gernika; Guggenheim Museum Bilbao.

An Italian hotel proprietor's autograph book; Margaret Keane "Big Eye" painting; collection of 1936-1939 Edward Weston photographs.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

British General Cornwallis struggles to pacify the southern states; supported by the French, a victory at Yorktown secures independence for the Americans.

Barnaby is called to investigate when a body is found in a relish factory.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

Horse tour guide in Iceland; a rapper who blends Greek and Ghanaian culture; inside one of Vienna's oldest coffeehouses.

Three young adults meet industry professionals who expand our ideas of what well-being can be, from developing tools for digital wellness to laying the foundation for empathetic architectural design.

British General Cornwallis struggles to pacify the southern states; supported by the French, a victory at Yorktown secures independence for the Americans.

Christiane Amanpour leads discussions about world issues and interviews with global leaders.

Strengthening and stretching all muscles and releasing joint tension or pain in the hips and hamstrings.

Benny's toy penguin is swept away by melting snow, transforming a day of sledding into an urgent rescue mission.

Lyla trains Stu to help at the diner; Stu learns how to ride a scooter.

Forrest makes too many plans on the same day; Carl and Arugula build an epic marble run but fail to get the marble to run.

Daniel and Dad Tiger go to the Dad and Me Camp-out, where they run into Katerina, who arrives with her mom; Daniel and Mom head to the Mom and Me Game Night.

Phoebe and Jay learn how to sort items; Phoebe and Jay learn how to make food labels, so everyone can participate in the potluck.

When Telly learns that earthworms are invited to Abby's garden party, his friends help him feel less scared.

Sammy plans a surprise Carnaval for his dad while Quique plans a surprise treat for his son; Malik performs a magic trick.

Bob Dog brings a ball to the Stuffie Playdate; Frannie Fox invites Donkey to her swamp, but she feels nervous about playing in it.

Rosie accidentally gives away her doll Lele on Donating Day; Rosie and Galita volunteer for Seniors Day at the Nature Center.

While delivering chocolates, the kids learn that warmer temperatures can melt treats; the kids help Mr. Raccoon calm down when he is having a bad day.

Peg and Cat help Emily Dickinson search for a rhyming pattern for her poem; shapes are being stolen.

Trini is discouraged because she can't add her own moves to the Lynx Dance; Molly hopes to catch a Yukon River king salmon.

Daniel and Dad Tiger go to the Dad and Me Camp-out, where they run into Katerina, who arrives with her mom; Daniel and Mom head to the Mom and Me Game Night.

Sammy plans a surprise Carnaval for his dad while Quique plans a surprise treat for his son; Malik performs a magic trick.

Phoebe and Jay learn how to sort items; Phoebe and Jay learn how to make food labels, so everyone can participate in the potluck.

Benny's toy penguin is swept away by melting snow, transforming a day of sledding into an urgent rescue mission.

Yadina learns that if she wants to reach the top of the hill, she must keep going; everyone has ideas that are worth sharing.

On Alma's great-grandmother's 100th birthday, Alma wants to find Bisabuela the perfect gift; even though she can think of all kinds of things that Bisabuela likes, none of them are quite right.

Arthur gets a new piano teacher; Buster volunteers to sell candy for the band.

The brothers come across a marsupial opossum while searching for Chris' lost goggles in the swamp.

Rome's Colosseum and Pantheon; bike riding along the Appian Way; Roman engineering.

A Lambert magician automaton circa 1900; Ray Bradbury archive; Fred Myrick scrimshaw tooth circa 1830.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever.

How discoveries over the past 50 years have revolutionized people's understanding of the universe.

From Kenya to Mexico, people and wildlife find a harmonious balance in Earth's most vulnerable landscapes.

Exploring water plants, some of which can count and hunt; some water plants escape from animals by rolling away or creating bubbles.

Inspector Barnaby investigates a web of family feuds, when a retired music teacher is found battered to death.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

Author and journalist Wil Haygood.

An adventure across Iowa's scenic byways, enjoying the historic sites, unique attractions and natural beauty along the way.

The story behind David Attenborough's wildlife documentary series "Life on Earth," which changed his life forever.

How discoveries over the past 50 years have revolutionized people's understanding of the universe.

From Kenya to Mexico, people and wildlife find a harmonious balance in Earth's most vulnerable landscapes.

Christiane Amanpour leads discussions about world issues and interviews with global leaders.

Increasing bone strength with an all-standing workout.

Corky is selected to make a presentation at school during a science day celebration, but humidity jeopardizes her project.

Lyla figures out how to do a magic trick with clues from Miss Emmaline; Luke finds a puppy.

Arugula and Carl go on an adventure as archaeologists; Carl spots a UFO on Mother's Day.

Things don't go as planned when Daniel and Dad Tiger spend the day together; Daniel and Mom's day together includes turning her old wagon into a trolley.

Jay and Lupe use wayfinding signs to track down Phoebe; Pete and Craig face an epic hoops battle on the courts.

Rudy feels angry when Abby asks him to share his toys, so his friends make a movie to show that sharing can be fun.

All aboard the Moo Moo Choo Choo; visiting great uncle Duper in the Windborhood; world's biggest whirligig blows away; helping great uncle Duper imagine how to build a new one.

Donkey babysits a baby yodel bird who won't take a nap; Donkey and Panda argue while playing superheroes.

Rosie and Javi get a new book, but it's in a different language; Rosie tries to form a club with her friends.

Ari grows impatient waiting for ketchup; Elinor, Olive and Ari have to figure out how to expand their clubhouse to fit all the new members of The Explorer's Club.

Peg and Cat host an awards show that is only seven minutes long; Peg's hat shrinks in the dryer.

Molly uses Indigenous knowledge to spot a storm.

Things don't go as planned when Daniel and Dad Tiger spend the day together; Daniel and Mom's day together includes turning her old wagon into a trolley.

All aboard the Moo Moo Choo Choo; visiting great uncle Duper in the Windborhood; world's biggest whirligig blows away; helping great uncle Duper imagine how to build a new one.

Jay and Lupe use wayfinding signs to track down Phoebe; Pete and Craig face an epic hoops battle on the courts.

Corky is selected to make a presentation at school during a science day celebration, but humidity jeopardizes her project.

Mary Anning inspires Xavier and Yadina to continue working on a tricky art project; Charlie Chaplin helps Yadina cheer up Dr. Zoom.

Alma, Eddie and Junior play a late-night game with Steggie; Alma decides she wants to play piano.

Muffy challenges Francine to be nice for one week; Arthur joins a gang.

Martin encounters a lost colony of black-footed ferrets.

Bernini statues; St. Peter's Basilica at the Vatican; Roman dinner; romantic nightspots.

A Booker T. Washington archive; a 17th-century Chinese transitional wine pot; Eanger Irving Couse painting.

Co-anchors Amna Nawaz and Geoff Bennett and correspondents offer in-depth analysis of current events.

Inspector Sullivan asks for Father Brown's help when Mrs. Devine's son, Eddie, is framed for Howton's murder.

Mike, Kristin, and the team look into the murder of a farmer's market owner, who staggers into the crowd with a garden implement embedded into her back.

Barnaby delves into the history of Midsomer Mere after a series of murders take place.

The team is confounded by a shocking murder in a hotel elevator.